3 years ago

What is the length of DF in cm DE=2cm EF=6cm

Mathematics

1 answer:

Eddi Din [679]3 years ago

5 0

12 cm because 2•6=12

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Someone please help me

exis [7]

V = 1/3 l h w

V = 1/3 (12)(15)(9)
V= = 540

answer 540 m^3

8 0

3 years ago

Find the product of the following expression.<br> 4(3x2 - 4x + 5)

Papessa [141]

Answer:

-16x + 44

Solution:

4(3×2 - 4x + 5)

= 4( 6 - 4x + 5)

=4( -4x + 11)

= -16x + 44

4 0

3 years ago

can someone please help me with question 1? I will give brainliest to first answer! Thank you so much! I really appreciate anyon

Goryan [66]

Answer:

49 in the first box and 7 in the second one

25 in the 3rd box and 5 in the 4th

8 0

3 years ago

Scott is on his school's academic team. On average, it takes Scott 4 minutes, with a standard deviation of 0.25 minutes, to solv

uysha [10]

Answer:

15.87% is the chance that Scott takes more than 4.25 minutes to solve a problem at an academic bowl.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 4 minutes

Standard Deviation, σ = 0.25 minutes

We standardize the given data.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(more than 4.25 minutes to solve a problem)

$P( x > 4.25) = P( z > \displaystyle\frac{4.25 - 4}{0.25}) = P(z > 1)$

$= 1 - P(z \leq 1)$

Calculation the value from standard normal z table, we have,

$P(x > 4.25) = 1 - 0.8413 = 0.1587 = 15.87\%$

Thus,15.87% is the chance that Scott takes more than 4.25 minutes to solve a problem at an academic bowl.

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3 years ago

The sum of the angle measures in a 21-gon is

Dominik [7]

Answer:

180

Step-by-step explanation: The exterior angles sum to 360 and there are 21

6 0

3 years ago